#!/bin/bash

s1_goto_dir(){

cd "$1"
}
s2_touch_empty_file_with_given_name(){
touch "$1"
}
s3_make_directories(){

mkdir -p projects/{git,backup}

}
s4_create_6_files(){

touch projects/{linux1_,linux2_}{centos,redhat,c_programming}

}
s5_make_directories_in_git(){
mkdir -p projects/git/{linux1,liunx2}
}
s6_move_files_to_dir_1_or_2(){

mv projects/*linux1_* projects/git/linux1/
mv projects/*linux2_* projects/git/linux2/
}
s7_create_package_and_compress(){
tar czvf projects/backup/git.tar.gz -C ~/projects git/

}
s8_delete_dir_git(){
rm -rf ~/projects/git
}
s9_recover_from_git_tar_gz_backup(){
tar -zxvf projects/backup/git.tar,gz -C ~/projects git/

}
s10_create_package_and_compress(){
tar -jcvf projects/backup/git.tar.gz -C ~/projects git/
}
s11_find_and_sort_alphabetically_all_create_files_and_dirs(){

find ./projects -type f -p -type d | sort -n

}
s12_get_next_15_minutes_boundary(){
now=$(date '+%s')
next=$(((now + 900) / 900 * 900))
next_quarter_hour=$(date -d "@$next"  '+%Y-%m-%d_%H:%M:%S')
echo $next_quarter_hour


}
